in SmartTreeView is there a way to catch the event SelectedItemChanged  before it fires and cancel it? I want to cancel it so the user stays on the current node based on some conditon from an object on a different form/toolwindow that subscribes to SelectedItemChanged.

Thanks,

It is not possible to cancel it.  However, a possible workaround you can use is to to verify it the condition is met in the event handler , and if so, set the selected item back to what it was before the event was triggered.

e.g.:

private Xceed.SmartUI.Controls.TreeView.Node previousNode;

private void Form1_Load(object sender, EventArgs e)

    previousNode = ( Xceed.SmartUI.Controls.TreeView.Node )smartTreeView1.SelectedItem;

    smartTreeView1.SelectedItemChanged += new EventHandler( smartTreeView1_SelectedItemChanged );

}